Abstract
Inorganic nanoparticles Fe 2O 3 3–5 nm in diameter were assembled on the surface of polymer microspheres and then encapsulated in the polymer to form a trilayer composite structure. The capacitance–voltage ( C– V) curve of the composite microsphere monolayer shows the presence of a plateau. The electron transportation process in the special structure was investigated combining with the energy band model. The results show that Fe 2O 3 layer acts as a charge trap between polymer layers which are regarded as potential barriers.
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